The legendary Momentum M50 offers industry leading reliability, combining an amazing depth rating of 500 metres and 10 year battery life. Also extra tough Sapphire Crystal lens, designed for the most harsh extremities any diver will experience. The brand new M50 MARK II is the latest edition to the Momentum family and features cutting edge designs such as big, bold numbers for unmatched legibility and harnesses the latest technology to satisfy every need of the adventurous modern diver.